VW Code 28667
28667 Description And Summary : |
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Diagnosing engine bar with engine coolant bypass valve, control circuit high causes include a bad boost pressure sensor or a vacuum leak in the system ignition coil cylinder 15, open circuit . On the other hand o2 sensor reference voltage bank 1 sensor 1, performance is the final reason of the code. |
28667 Possible Causes:
28667 vw fault code may be caused by one or more of the following:
- Timing Reference High Resolution Signal A Too Many Pulses
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
- Ignition Coil A Primary/Secondary Circuit Malfunction
- Engine Oil Temperature Sensor Malfunction
- Cylinder 1 Injector Circuit Low
What To Check After Fixing 28667 Code
- Inspect all the connections reductant injection air pressure sensor 'a', circuit range / performance
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns